Enermax Noisetaker EG701AX-VE SFMA 2.0: 600 Watts!

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The Noisetaker 701 employs the thermally regulated dual fan cooling system they introduced many years ago: An 80mm exhaust fan on the rear of the PSU, and a 92mm intake on the bottom. It also includes a manually adjustable fan speed dial that works in conjunction with the automatic thermal regulation to bias the speed of the fans towards low noise or low temperatures.

One new feature of the Noisetaker V2 series is the introduction of what Enermax calls a Ring Core. This consists of a gasket that fits around all of the output wires as they exit the casing of the PSU that is designed to suppress EMI. We do not have the equipment to test the actual effectiveness of this feature.

Externally, the Noisetaker 2.0 revision looks identical to the earlier version. The darker shade of blue indicates that our model has an active PFC. A lighter blue version is available without active PFC.

There is a passive intake vent on the front that allows air to flow across the internal components that are farthest from the fans. The "Ring Core" that Enermax advertises can be seen around the cables as they exit the casing.

The internal PCB is neat and well laid out.

Loose spacing between the components means less airflow is needed for adequate cooling.

Back exhaust fan at left; bottom intake fan on right. The larger intake fan is rated for higher current, which means it moves more air than the exhaust fan. Why? Perhaps to accommodate different pressure loads so that the inflow, after going through the PSU (and some of it betting lost in back pressure), is equal to the exhaust outflow.

Cables and Connectors

There are eight cable sets, as well as fan header that transmits a fan RPM signal to the motherboard.

  • 21" sleeved cable for main 20/24-pin ATX connector
  • 21" cable for 4-pin auxiliary 12V connector
  • 21" cable for 6-pin PCI-Express connector
  • 2 x 26" cables with two 4-pin IDE drive connectors and one floppy drive power connector
  • 34" cable with three 4-pin IDE drive connectors
  • 2 x 24" cables with two SATA drive connectors
  • 24" cable for PSU Fan RPM sensor
Aftermarket PCI-e adapter cable

It is in the number and type of cables that we expect to see the most obvious differences between this Noisetaker V2 and the older version. In compliance with ATX12V 2.01, the main header now supports 24-pin motherboards. Like the recently reviewed OCZ ModStream, the header is convertible between 20 pins and 24 pins as needed via an extra 4-pin plug that clips on the basic 20-pin connector.

Aside from the changes to the main ATX header, a PCI-Express connector has been added, as well as two additional SATA power connectors. An additional PCI-Express connector for SLI systems is available in the SLI model for $10 more. It has to be noted, however, that this PCI-e connector carries only 12V and ground lines; inexpensive adapters to convert two standard 4-pin Molex power connectors into a PCI-e connector are already available.

Flexible woven sleeves divide the cables into three bundles for improved management. This is a welcome improvement. The previous Noisetaker we reviewed had very stiff plastic sleeves that made cable management ridiculously difficult.

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